DeveloperSpace
HTML5accessibility.com web site
Diagnostic.css is a stylesheet which allows the user to test for common errors in a page's markup
flagging accessibility concerns
Working together to fix accessibility on the Web, one site at a time.
A bookmarklet that simulates various types of users with disabilities. It is an education tool that will hopefully educate people about web accessibility.
Pa11y is your automated accessibility testing pal
Open Source Biometrics, Face Recognition
The accessibility guidelines used by the OOCSS open source project
PHP variant of the Web Experience Toolkit (WET)
WordPress variant for the Web Experience Toolkit (WET)